i have no idea where did you get that, but if i remember biblo was the oldest hobbit ever and he left the shire at the age of 111 and he left middle-earth at the age of 131. Bilbo turned 131, and became the oldest Hobbit in Middle-earth, quote from lotr.wikia.com

They do live a tad longer, yes. But it was also partly because of the ring, which slowed his (and Bilbo's) aging. Pippin, Merry, and Sam are all over a decade younger than Frodo. Pippin, the youngest, is 22 years younger than Frodo.
In the books, it mentions the hobbits of the Shire are actually kinda suspicious of how Bilbo aged so well and lived as long as he did after returning from his adventures. Likewise, they're kinda suspicious of Frodo for staying so youthful. They see the Baggins are sorta strange.